Placing cast under tap water is to be avoided as______________?

Related Mcqs:

1. Model plaster (white) used to cast study models before mixing with water, is largely composed of____________?

   A. CaO
   B. CaCO3
   C. (CaSO4)2-½H2O
   D. CaSO4-2H2O

2. Back pressure porosity can be avoided by________________?

   A. Using asbestos linear
   B. Placing the sprue at least one quarter inch away form the end of casting ring
   C. Preventing rapid heating the investment in burnout oven
   D. Using a short and wide sprue

3. The following drugs are avoided with warfarin ______________?

   A. Antacids
   B. Benzodiazepine
   C. Nsaid’s like Ibuprofen
   D. Codeine, dihydrocodeine, paracetmol

4. A patient taking beta-blocker preoperatively, at induction of anaesthesia with fentanyl. Which muscle relaxant should be avoided ?

   A. Pancuronium
   B. Rocuronium
   C. Vecuronium
   D. Atracurium

5. Drug to be avoided in a patient allergic to penicillin is_____________?

   A. Sulphonamide
   B. Tetracycline
   C. Ampicillin
   D. Cholarmphenicol

6. Morphine a powerful opioid analgesic drug should be avoided in all the following conditions except____________?

   A. Left ventricular failure
   B. Bronchial asthma
   C. Constipation
   D. A & C

7. Following analgesic combination should be avoided ?

   A. Aspirin and Codeine
   B. Paracetamol and Dextropropoxyphene
   C. Ibuprofen and Paracetamol
   D. Ibuprofen and DIclofenac

8. Aspirin is avoided in children with influenza infection because of association______________?

   A. Reye’s syndrome
   B. Nausea
   C. Diarrhoea
   D. Acid-base imbalance

9. A rough / Chalky surface of the cast is due to_______________?

   A. Not waiting for 20 min before pouring
   B. High speed accelerator
   C. Air incorporation in the mix
   D. All of the above

10. The impression for a diagnostic cast of a partial edentulous mouth should be taken in_______________?

    A. Impression wax
    B. Modelling compound
    C. Hydro-colloid
    D. Hydro cal